Masonry Connectors
MTSM/HTSM Twist Straps The MTSM and HTSM offer high strength trussto-masonry connections. MATERIAL: MTSM–16 gauge; HTSM–14 gauge FINISH: Galvanized. See Corrosion Information, pages 13-15. INSTALLATION: • Use all specified fasteners. See General Notes. • Installs with hex-head Titen® screws. • Attach to either side of grouted concrete block with a minimum one #5 rebar horizontal. CODES: See page 12 for Code Reference Key Chart.
Fasteners2
Model No.
L Truss
MTSM16 MTSM20 HTSM16 HTSM20
16 7-10d 20 7-10d 16 8-10d 20 10-10d
CMU
Concrete
4- ⁄4x2 ⁄4 Titen 4-1⁄4x2 1⁄4Titen 4-1⁄4x2 1⁄4 Titen 4-1⁄4x2 1⁄4Titen
4- ⁄4x1 3⁄4 Titen 4-1⁄4x1 3⁄4 Titen 4-1⁄4x1 3⁄4 Titen 4-1⁄4x1 3⁄4Titen
1
1
1
F2 Typical MTSM20 Installation
Moisture barrier not shown
F1 1¹⁄₂ Min" .
DF/SP SPF/HF Allowable Lateral Allowable Uplift Loads1 Allowable Uplift Loads1 Loads (DF/SP/SPF/HF) Code Ref. 10d 10dx1 1⁄2 10d 10dx1 1⁄2 F1 F2 (160) 860 860 1175 1175
(160) 860 860 1175 1175
(160) 750 750 1020 1020
(160) 750 750 1020 1020
(160)
(160)
2358
908
F27
1. Loads have been increased for wind or earthquake loading with no further increase allowed. Reduce where other loads govern. 2. Twist straps do not have to be wrapped over the truss to achieve the allowable load. 3. Minimum edge distance for Titen screw is 1 1⁄2". 4. See page 173 for Titen screw information. 5. Table allowable loads were determined using test ultimate/3 or fastener calculation values. 6. Products shall be installed such that the Titen screws are not exposed to the weather. 7. Minimum f'm = 1500 psi and f'c = 2500 psi. 8. Lateral loads apply when on the wall side Titen screws are installed into the first four hexagonal holes from the bend line and on the truss/rafter the first seven nail holes near the bend line are filled. Any other fasteners required can be installed in any open hole. 9. NAILS: 10d = 0.148" dia. x 3" long, 10dx1 1⁄2 = 0.148" dia. x 1 1⁄2" long. See pages 22-23 for other nail sizes and information.
HTSM20
(MTSM20 similar)
MTSM16 (HTSM16 similar)
The MGT and HGT series are girder tie downs for moderate to high load applications that are typically installed prior to roof sheathing. The MGT wraps over the heel and is anchored on one side of the truss. The HGT straddles the heel and anchors on both sides of the truss. The HGT is field adjustable, making it suitable for trusses with top chord slopes up to 8/12. The HGT is available in sizes for 2-, 3- and 4-ply widths. MATERIAL: MGT—12 gauge; HGT—7 gauge FINISH: MGT— Galvanized; HGT—Simpson Strong-Tie® gray paint INSTALLATION: • Use all specified fasteners. See General Notes. • When the HGT-3 is used with a 2-ply girder or beam, shimming is required and must be fastened to act as one unit. • Attach to grouted concrete block with a minimum one #5 rebar horizontal in the top lintel block. • See page 204 for wood applications. CODES: See page 12 for Code Reference Key Chart.
Moisture barrier not shown Install a minimum of 6-10d nails into the face 3" Min.
3³⁄₄"
MGT Model No.
W
MGT
#5 Rebar Min.
Typical MGT Installation
O.C. DF/SP SPF/HF Fasteners Dim Allowable Allowable Code Between Concrete/ Girder Uplift Loads Uplift Loads Ref. CMU Anchors (160) (160)
3 3⁄4
—
1- 5⁄8
22-10d
3965
3330
HGT-2 3 5⁄16
5 3⁄4
2- 3⁄4
16-10d
10980
6485
HGT-3 4 15⁄16
7 3⁄8
2- 3⁄4
16-10d
10530
9035
HGT-4 6 9⁄16
9
2- 3⁄4
16-10d
9250
9250
F26 I20, F19
1. Attached members must be designed to resist applied loads. 2. Minimum f'm = 1500 psi and f'c = 2500 psi. 3. To achieve the loads listed for the MGT and HGT, anchorage into a 8" wide concrete tie-beam or grouted and reinforced CMU tie-beam can be made using Simpson Strong-Tie® SET Epoxy-Tie® adhesive with a minimum embedment depth of 12". Vertical reinforcement may be required to transfer the loads per Designer. 4. Allowable loads have been increased for wind or earthquake loading with no further increase allowed; reduce where other loads govern. 5. The MGT can be installed with straps vertical for full table load provided all specified nails are installed to either a solid header or minimum double 2x6 web. 6. Table allowable loads were determined using tested lowest ultimate/3 or fastener calculation values. 7. NAILS: 10d = 0.148" dia. x 3" long. See pages 22-23 for other nail sizes and information.
182
1¹⁄₄"
HGT-2
(HGT-3 and HGT-4 similar)
Typical HGT-2 Installation into Concrete
C-C-2015 © 2015 SIMPSON STRONG-TIE COMPANY INC. PRINTED 12/14
Masonry Connectors
MGT/HGT Girder Tiedowns